Pump-cylinder.



L. G. EDDY.

PUMP CYLINDER.

APPLICATION FILED APR.9, 191a.

ATTORNEYS WITNESSES %;%Ji%q ironnlvzo GILBERT EDDY, or HUNTINGTON, NEW YORK.

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Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed April 9, 1913. Serial No. 759,980.

To aZZ null/m it; may concern:

Be it known that I, Lorenzo GILBERT Ever, a citizen of the United States, and a resident of Huntington, in the county of Suffolk and State of New York, have invented a new and Improved Pump-Cylinder, of which the following is a full, clear, and exact description.

The invention relates to driven wells and its object is to provide a new and improved pump cylinder arranged for convenient removal from the well casing whenever it is desired to repair or clean the screen or other part.

For the purpose mentioned, use is made of a sleeve extending into the lower end of the pump cylinder and provided at its lower end with a screw thread, a screen, a coupling removably connected with the said sleeve and with the said screen, and a packing on v the sleeve intermediate the said pump cylin der and the said coupling.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the pump cylinder in position in the well casing, the latter and barrel being shown in section; Fig. 2 is a sectional side elevation of the same; Fig. 3 is a sectional plan view of the same on the line 33 of Fig. 2; Fig. 4 is a perspective view of the sleeve; and Fig. 5 is a side elevation of the tool for removing the sleeve.

In pump cylinders as heretofore constructed, it frequently happens that the pump cylinder cannot be removed from the Well casing in case it is desired to repair or clean the screen or other part. This is mainly due to the packing action of the sand which lodges between the barrel and the well casing on top of the rubber packing held exteriorly on the cylinder and snugly fitting the interior surface of the well casing.

In order to release this sand and to allow removal of the pump cylinder is the object of the invention presently to be described in detail.

The barrel A, shown in the drawings, is provided at its lower end with the usual retaining ring B supporting a check valve C, of any approved construction, and held in the lower end of the barrel A. In the upper portion of the barrel A is mounted to reciprocate the usual plunger valve (not shown) for pumping the water in the usual manner. The barrel A extends in the lower portlon of the well casingor tubing D, preferably provided at its lower end with the usual shoe E, and in order to hold the barrel A 1n position in the casing D use is made of a rubber ring F fitting snugly against the inner surface of the casing D. The rubberpacking F encircles a sleeve G provided at its lower end with an exterior screw thread G on which screws a coupling H held on the upper end of a screen I of usual construction, and through which the water is drawn on actuating the plunger valve previously mentioned. The upper edge of the packing F abuts against the lower edge of the retaining ring B while the lower edge of the said packing F is engaged by an in teriorly threaded metallic washer J resting on the upperv end of the coupling I-I so that the rubber packing F is properly expanded in an outward direction so as to fit snugly against the inner surface of the well casing D to securely hold the barrel A in position in the lower end of the well casing D. The upper end of the sleeve G is provided with bayonet slots G adapted to be engaged by a suitable tool K such as shown in Fig. 5, to permit of turning the sleeve G with a view to screw the same in or out of position on the upper end of the coupling H. The lower end of the retaining ring B is provided with an interior screw thread B in which is adapted to screw the screw thread G at'the time the sleeve G is turned to unscrew out of the coupling H, the washer J and the packing F.

The operation is as follows: Presuming that the barrel A is stuck in the well casing D by sand lodged between the exterior surface of the barrel A and the inner surface of the well casing D, the downward movement of the sand being checked by the packing F, the operator first removes the plunger valve in the upper end of the barrel A and then removes the check valve 0, after which the tool K is lowered into the barrel A and engaged with the bayonet slots G 'to permit of turning the sleeve G with a view to unscrew the same from the coupling H and to unscrew the same out of the washer J, packing F and thread B to allow of finally lifting the sleeve G out of the cylinder and out of the well casing. It will I be noticed that when the sleeve G is removed the previously expanded packing F relaxes owing to its elasticity, and consequently the sand between thecbarrel A and the well casing D is released to allow convenient pulling up of the barrel A by now screwing the lifting rod into the lower threaded end B of the retaining ring B and then lifting the said rod. The lifting rod may next be screwed into the coupling H to lift the screen I, packing ring F and washer J. By the arrangement described the barrel A need nolilbeturned when removingit from the we It is understood that when the sleeve G is unscrewed, the screen I and its coupling H are held against turning by the sand in Which the screen I is embedded, and hence the sleeve G can be readily unscrewed from the coupling H and the lifting rod previously mentioned can be subsequently readily screwed into position in the upper end of the coupling H.

Having thus described my invention, I claim as new and desire. to secure by Letters Patent:

1. In. combination, a pump cylinder, a sleeve extending into the lower end of the pump cylinder and provided at its lower end with a screw thread, a screen, a coupling removably connected with the saidsleeve and with the said screen, and a packing, on the sleeve intermediate the said pump cylinder and the said coupling.

'2. In combination, a pump cylinder, a sleeve extending into the lower end of the pump cylinder and having bayonet slots for engagement by a turning tool, a rubber washer encircling the sleeve below the said cylinder, a screen, and a coupling screwing moons? on the lower end of the sleeve and the upper end of the screen.

3. In combination, a pump cylinder, a sleeve extending into the lower end of the 4. In combination, a pump cylinder pro- 4 vided at its lower end with a retaining ring for the suction valve, a sleeve extending with its upper end into the'said retaining ring and having an exterior screw thread at its lower end, the said upper end being provided with bayonet slots adapted to be en-- gaged by a turning tool, a screen provided with acoupling adapted to screw onto the lower threaded end of the sleeve, an elastic pump cylinder and rovided at its lower end packing ring encircling the said sleeve above) ,65

its screw thread, the upper edge of the said packing ring abutting against the lower edge of the said retaining ring, a metallic washer encircling the said sleeve and engaging the bottomedge of the said packing ring and a screen having a coupling screwing onto the said lower threaded end of the said sleeve and engaging the said metallic washer.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LORENZO GILBERT EDDY.

' Witnesses:

Tnno. G. Hosrnn, PHILIP D. RoLLHAUs. 

